Child of the light

I am planing to start here manga/anime story. This will be my first manga story, so please help me with your ideas and suggestion.

The leading role is Mitsuko O'Connor. Yea. She is half irish and half japanese. Her father is irish and her mother is japanese. Mitsuko is 15 years old and she came to Japan to get education in 2nd high school in Japan. She is a goth and loves dark and black colors. She has red hair-some kind of egyptian style of hair, green eyes, but japanese shape of eyes, 170 height. Untypical for young female anime character, she is very serious, intelligent and responsible. While studing in the high school, Mitsuko has her other side-she is the gardian of other worlds amd dimensions and her duty is ti protest humans from magical creatures who are attacking and killing them-Mitsuko(jap. Child of the light). Sometimes she has to kill magical creatures who realy break the law.


So this is for the begining. I hope that you like plot of story. If you do pelase, help me with ideas. I will add her friends and enemies in story. Drama, humor, horor, action.